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New radiator cold at the bottom

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Dsurfgirl | 19:34 Wed 17th Jun 2009 | Home & Garden
6 Answers
I have a new heating system and combi boiler (less than 1 year old) The radiator in my lounge (nearest to the boiler) is cold at the bottom and warm at the top. I read that this could be a problem with the balancing and wanted clarification. All radiators are fitted with TRV's. All other rads are regular and were provided by my plumber except the lounge radiator which is a 'fashion' radiator - like an old school column rad that I bought from B+Q...
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You just need to let some air out of the top. You should have a radiator key.
hnot sure i agree with first answer.
as how can they let air out of top if its warm in top and cold in bottom?

we had this problem, and it was because it needed draining as we had lots of sludge in the system that had built up.

our radiators with this fault had to be taken off and flushed through, its a long process, as the plumber needs to attacha hose to the radiator and flush it out and clean it and get rid of all the sludge... the stuff that came out of ours was like an oil slick... unbelievable!! howeverm once this process of taken the rad off and having it flushed out for a few days, and the system was filled with a cleaner as well, our radiators are now fully warm and not just at the top like you say yours are.

hope this helps.
Sorry, didn't read it properly- I assumed it was the more common problem of hot at the bottom , cold at the top
Question Author
Thanks for this. Just wondered though, as the radiator is new, if it might not be a problem with sludge as the system hasn't even been running for 8 months yet...
As the installation is less than a year old I assume it should still be under warranty, in which case probably the best thing to do is call the plumber who installed it and ask him to check it out.
Question Author
Sometimes the simplest and most obvious solutions are the least apparent! Thank you for the nudge, and advice I will call my plumber now!

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New radiator cold at the bottom

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